rich 5rd besser, abc news, washington. >>> now, i want to bring everyone up to date on the former president of south africa, the man who ended about p apartheid, nelson mandela. the 94-year-old has been in the hospital since saturday, and until now, we didn't know why. but today, we learned that mandela is receiving treatment for a lung infection. he is said to be responding to treatment tonight and while we await his release, we thought back to that other image, the man who walked free after 27 years in prison. teaching the world not about retribution, but about forgiveness and healing. >>> and still ahead here on "world news," the incredible hit caught on tape, in the heart of holiday shopping in new york city. a real life manhattan murder mystery, tonight. [ male announcer ] when it comes to the financial obstacles military families face, we understand. at usaa, we know military life is different. we've been there. that's why every bit of financial advice we offer is geared specifically to current and former military members and their families. [ laughs ] dad! dad! [ applause ] ♪ [ mal